This issue occurs if your account isn’t enabled for Exchange Unified Messaging (UM).
Resolution
To fix this issue, install the June 7, 2016, update (KB3115087) for Skype for Business 2016.
This issue occurs if your account isn’t enabled for Exchange Unified Messaging (UM).
To fix this issue, install the June 7, 2016, update (KB3115087) for Skype for Business 2016.